9890166 has 32 divisors (see below), whose sum is σ = 23240448. Its totient is φ = 2766240.

The previous prime is 9890159. The next prime is 9890183. The reversal of 9890166 is 6610989.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4906 + ... + 6621.

It is an arithmetic number, because the mean of its divisors is an integer number (726264).

Almost surely, 2^9890166 is an apocalyptic number.

9890166 is an abundant number, since it is smaller than the sum of its proper divisors (13350282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9890166 is a wasteful number, since it uses less digits than its factorization.

9890166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11556.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 9890166 is about 3144.8634310571. The cubic root of 9890166 is about 214.6517962042.

It can be divided in two parts, 989016 and 6, that multiplied together give a square (5934096 = 2436²).

The spelling of 9890166 in words is "nine million, eight hundred ninety thousand, one hundred sixty-six".